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Finding the Fourth Proportional to 550.16, 760.68 and 480.98

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Solution

The fourth proportional to 550.16, 760.68 and 480.98 is: 665.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.16 : 760.68 = 480.98 : x
  2. Step 2: Convert to fraction form
    550.16/760.68 = 480.98/x
  3. Step 3: Cross multiply
    550.16x = 760.68 × 480.98
  4. Step 4: Simplify right side
    550.16x = 365,871.87
  5. Step 5: Solve for x
    x = 365,871.87/550.16
  6. Step 6: Final answer
    x = 665.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.